Draft regulator



2, 1932, H. w. :HE'YMAN 1,869,964

DRAFT REGULATOR Filed Jan, 29, 1950 2 Sheets-Sheet 1 IN VEN TOR Horace Mli'eyman l AZTORNEY/S Aug. 2, 1932. H. w. HEYMAN 1,869,964

DRAFT REGULATOR Filed Jan. 29, 1930 2 Sheets-Sheet 2 INVENTOR Hurace M Heymwz,

BIS A ITGRNE Y/S Patented Aug. 2, 1932.

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DRAFT REGULATOR Application filed January 29, 1930. Serial No. 424,243.

The present invention relates to draft regulators and embodies, more'specifically, an improved regulating device for furnace drafts. In applicants Patent No. 1,622,782

dated March 29, 1927, there is shown a draft regulator having a slide bar which is connected to the proper dampers of a furnace. By manipulating the bar the desired damper control is provided and there results an to effective draft regulation from a remote point. While the foregoing patented structure is effective as a manual control, it is sometimes desirable to effect the draft control automatically at a predetermined time and a timing mechanism is thus employed to initiate the actuation of the draft control mechanism.

While many forms of draft controlling mechanism have been provided tobe operated automatically by suitable timing mech anism, they have either been unsightly or difficult to manipulate, uncertain draft regulation resulting.

The present invention embodies a design for a draft control in which the draft operating mechanism is effectively operated by a timing mechanism, the adjustment and manipulation of which is accomplished with ease and accuracy.

An object of the present invention, accordingly, is to provide a device for effecting, automatically, the control of furnace drafts, the mechanism functioning equally well under manual or automatic control.

A further object of the invention is to provide a device of the above character in which a member connected to the furnace dampers is normally maintained in a given position by means of a latch, the drafts being off in such position. incidentally the member is urged to such position that the drafts will automatically be opened upon releasing of the latch.

The accomplishment of the above objects is attained by means of a catch member for restraining the slide bar, this catch mem her being operated either manually or by means of a timing mechanism. In addition to the foregoing, additional objects of the invention, not specifically enumerated above,

will be apparent as it is described in greater detail in connection with the accompanying drawings, wherein:

Figure l is aview in front elevation, showing a draft regulator constructed in accordance with the present invention.

Figure 2 is a 'viewin side elevation with the supporting wall in section showing the regulator of Figure 1.

V Figure 3 is a view in rear elevation, partly broken away, and showing the draft regulator of Figure 1. s

Figure 4 is a View similar to Figure 3, showing the latch of the restraining mocha nism moved into an inoperative position.

Figure 5 is a view in section, taken on line 5-5 of Figure 3, and looking in the direction of the arrows.

Figure 6 is a View in sect-ion, taken on line 66 of Figure 3, and looking in the direction 7 of the arrows.

Referring to the above drawings, a designates a supporting wall upon which a regulator housing I) is mounted. This housing is formed with an enlarged head 5 of reduced thickness which is adapted to receive a timing mechanism 0.

' Within the housing Z) a slide bar (Z is mounted, the lower extremity of the bar being bent forwardly as shown at d to provide a convenient means by which the bar is moved manually. A. suitable cable 0 connects the upper end of the bar with the furnace dampers and notches (Z are formed in the bar (1 as clearly shown in Figure 3'.

For the purpose of conveniently mounting the-bar slidably within the housing, a sup porting plate 6 is carried by the housing and a keeper 6 secured to the plate, thus restrict ing the vbar to a sliding movement. If desired, a spring 5 is mounted between portions of the plate 5 to serve as a cushioning element to cushion the downward movement of the bar 0?. v

A rear cover, plate 7 is secured to the housing Z) and formed with a tube f through which the cable 0 passes. This protects the wall from frictional contact with the cable.

Extending laterally through the casing and mounted slidably, is a bar 9 which is normally urged into the position shown in Figure 3 by means of a spring 5] seated against a plate 9 This bar is formed with an elongated notch 9 the left hand extremity of which, as viewed in Figure 3, is tapered to form a dog for engaging the notches d of the slide bar (Z. As will be apparent the bar 9 may be moved manually to release the slide bar (Z and permit its adjustment in a plurality of positions. In order that the mechanism may be susceptible of automatic operation, the bar 9 is also moved by means of a lever h which is pivoted to the plate 77 at h. This lever is pivoted to the bar 9 at h and extends upwardly into the enlarged portion b 01"- the housing 7). The end of the lever is suitably bent as at 7L3 to extend into the path. of movement of the winding key 0 of the timing mechanism 0. A stop 0 formed on a mounting plate 0 of the clock limits the winding of tee key 0 and likewise restricts its unwinding to approximately 360. Upon the release of the alarm mechanism the winding key moves in a clockwise direction as viewed in Figure 3, and engages the extremity 71 ot the arn 72 Continued rotation 01" the key moves the dog g out of engagement with the notches (Z and permits the slide bar (Z to fall, thus turning on the drafts.

To effect the adjustment and setting of the automatic mechanism, the clock is turned slightly with respect to the mounting memher 6 until the arms 0 on the mounting plate a move into notches 0' in the mounting b. The clock is then withdrawn and the key 0 wound to the position shown in Figure 3. After setting the alarm for the desired actuation, the clock is replaced and an automatic draft control is effected as described above.

Vhile the invention has been described with specific reference to the accompanying drawings, it is not to be limited, save as defined in the appended claim.

I claim as my invention:

In a draft regulator having a housing, a timing mechanism carried by the housing and an alarm winding key, a mounting plate in the housing, a slide bar mounted on the plate, said slide bar having notches, a spring pressed dctent mounted transversely to the bar and having one end extending through a Wall of the housing, a coil spring on the plate to cushion the downward movement of the bar, a lever pivoted at one end to the plate,

means to connect the lever intermediate its ends with the detent, and an extension on the lever engaged by the key.

This specification signed this 27 day of January A. D. 1930.

HORACE VJ. HEYMAN.

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